Assertion N3- is a weaker base than NH2-. Reason The lone pair of electrons on N atom in N3- is in a sp2- orbital while in NH2- it is in an sp3- orbital.

Question

Assertion N3- is a weaker base than NH2-. Reason The lone pair of electrons on N atom in N3- is in a sp2- orbital while in NH2- it is in an sp3- orbital. (A) If both Assertion and Reason are true and Reason is the correct explanation of Assertion. (B) If both Assertion and Reason are true but Reason is not the correct explanation of Assertion. (C) If Assertion is true but Reason is false. (D) If both Assertion and Reason are false.

Tardigrade Admin · Accepted Answer

Basicity depends upon availability of lone pair of electrons. Since textN3- is in sp2- orbital, its lone pair is less available as compared to NH2- in which the lone pair is in sp3 orbital. Thus, N3- is a weaker base than NH2-.

Q. Assertion $N_{3}^{-}$ is a weaker base than $N H_{2}^{-} .$ Reason The lone pair of electrons on N atom in $N_{3}^{-}$ is in a $s p^{2} -$ orbital while in $N H_{2}^{-}$ it is in an $s p^{3} -$ orbital.

If both Assertion and Reason are true and Reason is the correct explanation of Assertion.

If both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

If Assertion is true but Reason is false.

If both Assertion and Reason are false.

Basicity depends upon availability of lone pair of electrons. Since $N_{3}^{-}$ is in $s p^{2} -$ orbital, its lone pair is less available as compared to $N H_{2}^{-}$ in which the lone pair is in $s p^{3}$ orbital. Thus, $N_{3}^{-}$ is a weaker base than $N H_{2}^{-} .$

Q. Assertion N3−​ is a weaker base than NH2−​. Reason The lone pair of electrons on N atom in N3−​ is in a sp2− orbital while in NH2−​ it is in an sp3− orbital.